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Put an access list on the interfaces, denying icmp and permitting everything else.

You're right. I forgot I was in the PIX forum. ;o(

I upgraded a small firewall and am not having any problems. Granted, I'm not doing anything fancy on it. The only problem that I had with the upgrade was the DNS and WINS configuration for my VPN users didn't get set. It's set in the base group now, instead of for each group. But, it was...

Set the speed first.

You have to blow away the old access list and put the new one in with the statements in the order you want them. The best way to do this is to give the new acl another number, then apply that acl to the interface, then remove the old acl.

Add the two together.

When I converted, my VPN group info didn't convert. So, I had to go back in and set up DNS and WINS. Other than that, I didn't have any problems.

I'd clear the counters and see how quickly you're getting the errors. It does, however, look like a provider problem.

I'd put spanning-tree port fast on all of your end user connections. Sometimes, without it, the boot process just takes too long and processes like DHCP will timeout.

ZOC is another really good one. In answer to your first question. Any time your doing any command on a Cisco box, you can type any number of letters in the command followed immediately by a question mark. It will show you the options of commands you have for that series of characters. If...

Is the port in question disabled?

What telet application are you using? It looks like it's sending some carriage returns or what the router thinks are carriage returns. Don't use Hyperterm. Putty, ZOC, DOS, anything but hyperterm.

access-list 100 deny ip 192.168.12.0 0.0.0.255 192.168.0.0 0.0.255.255 log-input Is denying the users access to the router.

Routing is sending data from one IP range to another. You need to explain your question further.

If you're having this kind of problem, VoIP is not a good place to not know what your doing. Have you thought of hiring an outside contractor? Getting it set up is not the hard part here...

It should Do you have your CSS set up as a router or transparent? If you have it set up as a router, do you have your routes set up on it?

If you're really not using qos, these commands aren't doing anything.

One more thing. Your router on a stick is going to be limited by the bandwidth of the stick. Having L3 in your switch can increase the performance because you're using the backplane, which is generally more effecient.

ZOC is a pretty nifty terminal emulator too.

Try changing slots. Some of the routers don't recognize certain cards in certain slots.